Electric water heater



Jan. 10, 192; LEMERSON 1,655,413

ELECTRIC WATER HEATER Original Filed Dec. 1 1 21 Patented Jan, 10, 1928.

UNITED STATES I 1,655,413 PATENT; orrica.

EDWIN L. EMERSON, OF BRAINTREE, MASSACHUSETTS, ASSIGNOR T UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ELECTRIC WATER HEATER.

Application filed December 15, 1921, Serial No. 522,473. Renewed February 17, 1925.

This invention relates to water-heaters, and more particularly to those through which a current of water flows from a source of supply to be drawn as needed.

For lavatories, sinks, and in other situations where cold water is supplied through pipes, whether for domestic use or otherwise,

it is usually desirable to have hot or warm water also, but in many cases no provision is made for supplying hot or warm water. Accordingly, an object of this invention is to provide a heater of small cost that may be readily applied to one of the outlets of an existing cold-water system, to'the end that the initially cold water drawn from such outlet will be heated as drawn. The heater illustrated herein comprises a unitary structure adapted to be attached to and supported entirely by a faucet already installed and comprising a water receptacle, a coupling device by which the receptacle may be readily attached to the supporting faucet, and heating -means carried by the receptacle to heat the water therein, the receptacle having an inlet for the cold Water and an outlet for the 'warm water.

The inlet and coupling device are preferably located at or near the center of the receptacle to balance the device well enough to avoid the necessity of supporting the latter in part by a pipe leading from the outlet, since an outlet pipe. would not be available at sinks and lavatories and would be undesirable in most cases.

In its broader aspect the invention is not limited to any specific type of heating means but when a suitable source of electric current is available an electric heating element is preferable as being more convenient than other types. The accompanying drawings therefore disclose the invention in a form designed to utilize electrical heating means.

Referring to the drawings:

Figure 1 is a longitudinal vertical section through the device, the pipe and faucet connections also being in section.

Figure 2 is a bottom plan of the device.

Figure 3 is an end elevation showing the device attached to the faucet.

eferring to these drawings at 1 is shown a tubular shell or receptacle one end of which is closed and the other of which is open as at 2. This shell, as shown, is substantially cylindrical, its axis being horizontal, and

midway. of its ends is provided with a boss 3 having a vertical inlet passage at therein opening at 5 within the shell. This boss is threaded at its upper end for the reception of a pipe section 6 forming one part of a coupling device by which the receptacle may be attached to a supply pipe or faucet. The member 6 has an external flange or head 7 to cooperate with an internal flange 9 of a union 8. This union is internally threaded to be screwed onto a faucet standard screw-thread commonly used for hose couplings, or to a such a thread. Thus,-when the receptacle is coupled to a faucet or supply pipe by the union 8 it is thereby supported for use Without other means of support, the union serving at the same time to effect a tight connection with the source of supply. The open end of the shell 1 may be closed by a cap 11 made fast thereto by means such as screws 12 threaded therein.

The cap 11, as shown, is provided with an extension block 13 and passing through the block and cap are outwardly extending legs 14 of a heating element herein shown as of the electric resistance type, the legs 14 form ing opposite ends of a coiled or twisted loop 15 which extends to a substantial distance toward the closed end of the shell. The legs 14 are connected to electric terminal pins 16 suitably insulated from the shell and arranged to receive a coupling device at one end of a double cord.

An outlet for the heated water is provided by a reentrant nozzle or standpipe 17 the upper end of which is near the top of the water chamber, and the lower end of which is fastened, in a perforated boss 18 extending downwardly from the base of the shell adjacent to its closed end. this construction Water may be held within the shell up to the level of the top of the pipe 17 Where it may be heated b the heating element 15. When it is sufliciently hot the faucet may be turned on to admit cold water within the shell, thus displacing the hot water and causing it to flow out throughthe pipe 17. By charging the device intermittently with cold water the charges may be heated to any desired temperature according to the length of receptacle, each new charge acting to expel the heated charge. On

10 having a pipe section having the other hand, a

iOO

time they remain in the i continuous dischar e of warm water may be had by leaving t e supxply open 'continu-.

spirit or scope as defined'by the appended I claim.

I claim: A device of the class described comprising a horizontal hollow cylindrical shell open at one end, a cap for closing said open end, a heating unit carried by said cap and-av ranged to project within said shell when the cap is in closing position, a pipe connection integral with-said shell at substantially its of length and leading to the interiorcenter 7 thereof, means for attaching said pipeconnection to a faucet by which the entire device may be supported, a boss projecting downwardly from said shell adjacent to its closed end, and an outlet pipe extending through a perforation in said boss, and open 7 ing at its upper end within the upper 'portion of said shell. p I

In testimony whereof I have afiixed my signature.

EDWIN L. EMERSON. 

